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DM2 - Double Valves

DM2 - Double Valves

Product catalog summary

Overview: The document provides detailed information on the ROSS TM CrossflowTM SERPAR® double valves, specifically designed for the mechanical press industry. These valves are used in pneumatically controlled clutch and brake systems, ensuring safety and reliability by adhering to industry standards and regulations.

Specifications: The valves consist of two independently controlled valve elements with solenoid pilots and common ports, functioning as 3/2 normally closed valves. They maintain outlet pressure below 1% of inlet pressure during asynchronous operation. Available in sizes 4, 8, 12, and 30, they cater to various flow requirements. Additional features include a status indicator with pressure switch contacts, high flow silencers, and flexible mounting options with BSPP or NPT pipe threads.

Safety Features: The valves incorporate dynamic monitoring and memory systems that lock out the valve during asynchronous cycling, requiring manual reset to prevent automatic resets that could obscure potential hazards.

Technical Specifications: The valves operate with standard voltages of 24 VDC, 110 VAC, and 220 VAC, with power consumption of 5.8 W on DC and 15.8 VA inrush on AC. They are rated for continuous duty with an IP65 enclosure rating, suitable for ambient temperatures between -10 to 50°C and media temperatures from 4 to 80°C. The inlet pressure ranges from 2 to 8 bar.

Installation and Operation: Base-mounted with flexible piping options, the valves include high-flow silencers and require a remote reset signal for operation after lock-out, ensuring controlled and safe use. Installation and servicing should be performed by trained personnel, with all energy sources turned off and locked out.

Certifications: The valves are approved by BG-PRÜFZERT in Germany, ensuring compliance with safety standards.

Procedures: The valves feature total dynamic monitoring with memory, requiring an overt act to reset after lock-out. Reset can be achieved via remote air signal or optional solenoid reset. They are designed for quick response and high flow capacity, with a dirt-tolerant, wear-compensating poppet design.

Ordering Information: Model numbers are configured based on options like thread type, revision level, base port size, status indicator, reset type, and voltage. Specific model numbers and weights are provided for different configurations.

Accessories: Electrical connectors are available for connecting valve solenoids, with options for wired connectors with or without indicator lights. Reset valves for models with remote reset are also available.

Recommendations: It is recommended to use filtered compressed air and to observe EN 692 standards for safety. The document advises against using electrical connectors with surge suppressors to avoid increased response time.

Important Notes: The document emphasizes reading all cautions thoroughly and highlights the importance of the valve design for critical applications, meeting standards like EN 954 for control reliability and dynamic monitoring.

Application: The valve is used to prevent uncontrolled movements of cylinders or rotary drives, meeting strict safety requirements for pneumatic controls, making it suitable for critical applications beyond mechanical power presses.

Filtration and Lubrication: Install a filter with a 5-micron rating to clean the air supply. Use only compatible lubricants, typically petroleum-based oils with specific properties, to avoid damage to valve components.

Operating Instructions: Before start-up, check the installation thoroughly. Ensure operating pressure complies with specified limits. Perform pressure tests and functional tests to verify proper operation and lock-out conditions.

Maintenance and Repair: Maintenance should follow national work-safety regulations and be performed by trained personnel. Use only original ROSS parts for repairs. Document all repair and maintenance activities.

Warranty: ROSS products are warranted to be free of defects for one year from purchase. The warranty covers repair, replacement, or refund at ROSS's discretion. It is void if the product is misused or improperly maintained.

Catalog excerpts

U.S. Patent Numbers 6840258, 6840259 and worldwide patents pending A Worldwide Leader in Double Valve Technology Since 1950 www.rosseuropa.com 1

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TM The ROSS CrossflowTM SERPAR® double valves provide new features in response to the changing demands of the mechanical press industry and its associated standards (e.g. EN 692 ff.) and regulations regarding the control of pneumatically controlled clutch and brake applications. The consensus requirements of the regulations and good practices require that, in case of a failure within the valve, the clutch and brake mechanisms be quickly exhausted, a monitor takes action to prevent further operation, and a method to alert personnel is incorporated. These new features also make the valve suitable...

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Overview of (Please refer to the Main Valve Internals illustration on pg. 16.) The flow of inlet air pressure into the crossover passages is restricted by the size of the passage between the stem and the valve body opening. Flow is sufficient to quickly pressurize pilot supply/timing chambers A and B. The inlet poppets prevent air flow from crossover passages into the outlet chamber. Air pressure acting on the inlet poppets and return pistons securely hold the valve elements in the closed position. (Air passages shown out of position and reset adapter omitted for clarity.) Double Valve Function...

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CrossflowTM SERPAR® Double Valves U.S. PATENT Nos. 6840258 and 6840259 – other worldwide patents pending. TM ROSSdouble valves have been approved by the following testing and certificating authority: BG-PRÜFZERT, Fachausschuß “Maschinenbau, Hebezeuge, Hütten- und Walzwerksanlagen”, Germany. Simplified Schematic (See page 14 for complete schematic.) IMPORTANT NOTE: Please read carefully and thoroughly all of the CAUTIONS on page 16. • Total Dynamic Monitoring With Complete Memory: Memory, monitoring, and air flow control functions are simply integrated into two identical valve elements. Valves...

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CrossflowTM SERPAR® Double Valves HOW TO ORDER (Choose your options (in red) to configure your valve model number. See pages 7, 9, & 11 for other basic sizes.) REVISION LEVEL BASIC SIZE ** 220 VAC not available in the U.S. (OSHA regulations limit press control voltage to no more than 120 VAC). BASE MODEL NUMBERS and BASE SPECIFIC INFORMATION Model Number* Inlet Port Outlet Port Status Indicator D1697C91 D1698C91 D1699C91 D1700C91 *BSPP port threads. For NPT threads omit letter “D”. Example: 1700C91.

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CrossflowTM SERPAR® Double Valves HOW TO ORDER (Choose your options (in red) to configure your valve model number. See pages 5, 9, & 11 for other basic sizes.) REVISION LEVEL BASIC SIZE ** 220 VAC not available in the U.S. (OSHA regulations limit press control voltage to no more than 120 VAC). BASE MODEL NUMBERS and BASE SPECIFIC INFORMATION Model Number* Inlet Port Outlet Port Status Indicator D1701C91 D1702C91 D1703C91 D1704C91 **BSPP port threads. For NPT threads omit letter “D”. Example: 1701C91.

Open the catalog to page 7

CrossflowTM SERPAR® Double Valves U.S. PATENT Nos. 6840258 and 6840259 – other worldwide patents pending. TM ROSSdouble valves have been approved by the following testing and certificating authority: BG-PRÜFZERT, Fachausschuß “Maschinenbau, Hebezeuge, Hütten- und Walzwerksanlagen”, Germany. Simplified Schematic IMPORTANT NOTE: Please read carefully and thoroughly all of the CAUTIONS on page 16. (See page 14 for complete schematic.) • Total Dynamic Monitoring With Complete Memory: Memory, monitoring, and air flow control functions are simply integrated into two identical valve elements. Valves...

Open the catalog to page 8

CrossflowTM SERPAR® Double Valves HOW TO ORDER (Choose your options (in red) to configure your valve model number. See pages 5, 7, & 11 for other basic sizes.) PRODUCT THREAD REVISION LEVEL BASIC SIZE ** 220 VAC not available in the U.S. (OSHA regulations limit press control voltage to no more than 120 VAC). BASE MODEL NUMBERS and BASE SPECIFIC INFORMATION Model Number* Inlet Port Outlet Port Status Indicator D1705C91 D1706C91 D1707C91 D1708C91 *BSPP port threads. For NPT threads omit letter “D”. Example: 1705C91.

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CrossflowTM SERPAR® Double Valves HOW TO ORDER (Choose your options (in red) to configure your valve model number. See pages 5, 7, & 9 for other basic sizes.) STATUS INDICATOR REVISION LEVEL ** 220 VAC not available in the U.S. (OSHA regulations limit press control voltage to no more than 120 VAC). BASE MODEL NUMBERS and BASE SPECIFIC INFORMATION Model Number* Inlet Port Outlet Port Status Indicator D1709C91 D1710C91 *BSPP port threads. For NPT threads omit letter “D”. Example: 1709C91.

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DM2 - Double Valves

DM2 - Double Valves

Catalog excerpts

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